JPS566188A - Alarm unit for timepiece - Google Patents

Alarm unit for timepiece

Info

Publication number
JPS566188A
JPS566188A JP8161379A JP8161379A JPS566188A JP S566188 A JPS566188 A JP S566188A JP 8161379 A JP8161379 A JP 8161379A JP 8161379 A JP8161379 A JP 8161379A JP S566188 A JPS566188 A JP S566188A
Authority
JP
Japan
Prior art keywords
alarm unit
fitted
cover glass
timepiece
plzt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8161379A
Other languages
Japanese (ja)
Inventor
Masao Imai
Masanobu Fujisaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP8161379A priority Critical patent/JPS566188A/en
Publication of JPS566188A publication Critical patent/JPS566188A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

PURPOSE:To obtain an alarm unit superior in waterproofing and large in sound pressure, by constituting the alarm unit by fitting cover glass, etc., with a transparent piezoelectric element of PLZT, etc., with transparent electrodes fitted on its both sides. CONSTITUTION:On the top and reverse of PLZT4 formed in the hot-press method, nesa electrode 3 and 5 are provided and it is bonded to cover glass 1 by epoxy adhesives. Further, PLZT may be formed by high-frequency sputtering while the cover glass fitted with the nesa electrodes is used as a substrate. In terms of a timepiece with a liquid-crystal display unit, a piezoelectric element can be fitted to liquid-crystal panel glass.
JP8161379A 1979-06-28 1979-06-28 Alarm unit for timepiece Pending JPS566188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8161379A JPS566188A (en) 1979-06-28 1979-06-28 Alarm unit for timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8161379A JPS566188A (en) 1979-06-28 1979-06-28 Alarm unit for timepiece

Publications (1)

Publication Number Publication Date
JPS566188A true JPS566188A (en) 1981-01-22

Family

ID=13751162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8161379A Pending JPS566188A (en) 1979-06-28 1979-06-28 Alarm unit for timepiece

Country Status (1)

Country Link
JP (1) JPS566188A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9615166B2 (en) 2012-06-06 2017-04-04 Pioneer Corporation Electronic machine, and automobile and accommodation unit provided with the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5355171A (en) * 1976-10-29 1978-05-19 Rion Co Buzzer for wristwatch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5355171A (en) * 1976-10-29 1978-05-19 Rion Co Buzzer for wristwatch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9615166B2 (en) 2012-06-06 2017-04-04 Pioneer Corporation Electronic machine, and automobile and accommodation unit provided with the same
US10178470B2 (en) 2012-06-06 2019-01-08 Pioneer Corporation Electronic machine, and automobile and accommodation unit provided with the same

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